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EP2075388B1 - Reinforcement elements and steel or reinforced concrete sections produced with same - Google Patents

Reinforcement elements and steel or reinforced concrete sections produced with same Download PDF

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Publication number
EP2075388B1
EP2075388B1 EP09005165.7A EP09005165A EP2075388B1 EP 2075388 B1 EP2075388 B1 EP 2075388B1 EP 09005165 A EP09005165 A EP 09005165A EP 2075388 B1 EP2075388 B1 EP 2075388B1
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EP
European Patent Office
Prior art keywords
reinforcing
component
prestressed concrete
steel
reinforced
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP09005165.7A
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German (de)
French (fr)
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EP2075388A1 (en
Inventor
Gerd Prof.Dr. Ing. Günther
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Technische Hochschule Mittelhessen
Original Assignee
Fachhochschule Giessen Friedberg
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Publication of EP2075388A1 publication Critical patent/EP2075388A1/en
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    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
    • E04C5/00—Reinforcing elements, e.g. for concrete; Auxiliary elements therefor
    • E04C5/16—Auxiliary parts for reinforcements, e.g. connectors, spacers, stirrups
    • E04C5/18—Spacers of metal or substantially of metal
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
    • E04C5/00—Reinforcing elements, e.g. for concrete; Auxiliary elements therefor
    • E04C5/01—Reinforcing elements of metal, e.g. with non-structural coatings
    • E04C5/06—Reinforcing elements of metal, e.g. with non-structural coatings of high bending resistance, i.e. of essentially three-dimensional extent, e.g. lattice girders
    • E04C5/0645—Shear reinforcements, e.g. shearheads for floor slabs
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
    • E04C5/00—Reinforcing elements, e.g. for concrete; Auxiliary elements therefor
    • E04C5/16—Auxiliary parts for reinforcements, e.g. connectors, spacers, stirrups
    • E04C5/168—Spacers connecting parts for reinforcements and spacing the reinforcements from the form

Definitions

  • the invention relates to a steel or prestressed concrete part according to the preamble of claim 1.
  • US 32386484 A discloses such a steel or prestressed concrete part.
  • a supported reinforced concrete ceiling is u.a. in the area of the floor supports a shear reinforcement for shear protection necessary.
  • shear reinforcements made of reinforcing steel with reinforcing elements in the form of S-hooks (although no longer permitted according to DIN 1045) or ironing, dowel strips, double-headed dowels, lattice girders, Tobler Walm, Geilinger collar, ironing mats, crack star and the like.
  • a shear reinforcement with reinforcing elements in the form of S-hooks or straps must enclose a mostly existing Biegel Kunststoffsbewehrung for reasons of poor anchoring to prevent tearing of the shear reinforcement. It should be noted that only a moderate increase in shear force capacity is achieved. The installation of the reinforcing elements is complicated and therefore expensive. In addition, conventional reinforcing elements, such as e.g. Temple, with high reinforcement levels and high shear reinforcement proportion as no longer installable.
  • dowel strips are usually placed on the lower formwork, so that - if present - the lower reinforcement layer is covered by the strip cross-section.
  • the exact position and fixation of the strip is decisive for the load-bearing behavior, which is not always guaranteed on the construction site.
  • the dowel strips are welded individual productions which, in relation to the very high costs, produce a barely detectable increase in the lateral force carrying capacity.
  • fasteners or spacers for the upper and lower reinforcement layers are off DE-U1-71 18 881 .
  • DE-OS 2,111,243 or DE-OS-1 913 104 known.
  • these elements do not serve as reinforcing elements, but only to fix the provided in the concrete part reinforcing bars before pouring concrete in a desired position or position. On the puncture resistance or even on the load capacity of the concrete pavement this has no influence.
  • the object of the invention is to overcome these and other disadvantages of the prior art and to provide steel or prestressed concrete parts with built-in reinforcing elements, which are simple in construction and inexpensive to produce.
  • the aim is also a good anchoring of the reinforcing elements between the reinforcing bars, the installation should be carried out quickly and easily.
  • the reinforcing elements should noticeably increase the stability, in particular the transversal load carrying capacity of the component.
  • the steel or prestressed concrete part should also be inexpensive to produce and easy to handle.
  • the core of the invention forms a steel or prestressed concrete part with a reinforcing element in the form of a flat component, which connects the upper and lower reinforcing layers located within the concrete part to the surfaces by means of suitable upper and lower holding means.
  • the reinforcing elements can be manufactured as simple free-falling stamped parts, which are to be provided with further folds. This allows a very cost-effective production, which also has a favorable effect on the production costs for the concrete parts.
  • the reinforcement elements are easy to handle and quick to assemble. They just have to be hung. Special skills or skills, such as those required for welding, are not required.
  • the holding means have the features of the characterizing part of claim 1.
  • reinforcing elements of this type if they are installed according to the invention in interaction with the reinforcement layers within a concrete part, in addition to the puncture resistance above all significantly increase the transverse force carrying capacity over conventional constructions.
  • the reinforcing elements in the FIGS. 1 and 2 do not have two bends. Components with these reinforcing elements are therefore not part of the invention.
  • Fig. 1 This in Fig. 1 generally designated 10 reinforcing element is intended for use in a (not shown here) steel or prestressed concrete component 1. It has as the main part 12 a simple flat body made of structural steel, which has a recess 30 in its upper region 14 and in its lower region 15. The latter is formed by a slot which is open to the lateral longitudinal edge 16 of the flat body 12 and extends approximately from the longitudinal center of M perpendicular thereto.
  • Each recess 30 forms a holding means 20 for a (also not shown here) reinforcing element S, in particular for a reinforcing bar an upper and lower reinforcing layer Bo, Bu in the steel or prestressed concrete part 1 (see Fig. 26). These lie in each case on the (also unspecified) component surfaces. They are formed by at least one inner layer Bo_y, Bu_y and at least one outer layer Bo_x, Bu_x running perpendicular thereto.
  • the flat body 12 with its laterally open recesses 30 is simply attached to two reinforcing rods S of the inner layers Bo_y, Bu_y which lie directly above one another and extend in the same direction, so that each reinforcing bar S is at least partially enclosed.
  • the clear height of the recesses 30 is dimensioned so that the flat body 12 is firmly seated with friction on the reinforcing rods S and can not be solved during the pouring of the concrete.
  • each reinforcing element 10 with its flat body 12 is always transversely, preferably perpendicular to the reinforcing bars S and extends substantially over the thickness of the steel or prestressed concrete part 1, to at least above and below the innermost of at least an inner layer Bo_y, Bu_y of the upper and lower reinforcement layer Bo, Bu. The latter are thereby positively connected with each other.
  • reinforcing elements 10 Another advantage of the reinforcing elements 10 is that they can be made, for example, as free-falling stampings thanks to their simple geometry, which further reduces the manufacturing costs. They can be installed quickly and easily at any time, with no special expertise or skills necessary. This also significantly reduces the production costs for the steel or prestressed concrete part 1 to be produced.
  • Fig. 2 has the reinforcing element 10 in its upper portion 14 as a holding means 20, a slot 30, while in the lower region 15, a round or oval recess 30 is provided.
  • FIG Fig. 2 Another important embodiment of the reinforcing element 10 is shown in FIG Fig. 2 shown.
  • the holding means 20 is formed in the upper region 14 of the sheet-like body by a simple folded edge 40 formed on the end side. This preferably encloses a reinforcing bar S of the outer layer Bo_x the upper reinforcement layer Bo.
  • the holding means 20 in the lower region 15 of the planar body 12 is an L-shaped recess 30 which encloses a reinforcing bar S of the inner layer Bu_y of the lower reinforcing layer Bu.
  • the holding means 20 in the form of recesses 30 and folds 40 according to the invention combine with each other, wherein reinforcing rods S of the inner and outer layers Bo_y, Bu_y, Bo_x, Bu_x can also be detected simultaneously.
  • Fig. 3a is the integrally formed in the upper region 14 fold 40 angled backwards, while the fold 40 in the lower region 15 points forward.
  • the reinforcing element 10 thus has - as in Fig. 3b to recognize - in cross section a substantially Z-shaped shape.
  • Fig. 4 shows that in the upper and lower regions 14, 15 of the flat body 12 symmetrically to the longitudinal center M four recesses 30 are provided as a holding means 20, which enclose the reinforcing rods S form fit.
  • the recesses 30 are not open to the longitudinal edges 16, that is, the reinforcing rods S are inserted substantially perpendicularly into the flat body 12.
  • Additional folds 40 surround as additional retaining means 20, the respective outer layer Bo_x, Bu_x the upper and lower reinforcement layer Bo, Bu, so that the reinforcing elements 10 are optimally integrated into the steel or prestressed concrete part 1 to increase the shear capacity.
  • its ductility increases with transverse force stress.
  • the reinforcing elements 10 can also enclose more than four reinforcing rods S.
  • the planar body 12 is to be lengthened transversely to its longitudinal center M and provided with the required number of holding means 20.
  • the number and size of the components 10 are to be dimensioned in order to achieve the required puncture resistance, e.g. in the area of a column. In any case, results for the component 1 a significantly increased lateral force capacity.
  • the reinforcing elements 10 can also be made of other materials, e.g. Sheet steel, plastic, or composite material are manufactured. Also, you can form the reinforcing elements 10 and their flat body 12 extends transversely to the longitudinal center M extended to surround in this way a plurality of reinforcing bars S of the upper and lower reinforcing layers Bo, Bu simultaneously.
  • the reinforcing elements 10 are always flat, possibly folded at the ends or in the middle, sheet metal parts which have holding means for receiving or enclosing the reinforcing rods S of an upper and lower reinforcement layer Bo, Bu in the upper and lower regions ,
  • the installation is carried out without complex welding or assembly work, the upper and lower reinforcing layers Bo, Bu are connected by the reinforcing elements 10 in the pulling direction non-positively.

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  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Reinforcement Elements For Buildings (AREA)
  • Rod-Shaped Construction Members (AREA)

Abstract

The reinforcement (10) is for a reinforced concrete or prestressed concrete section (1) which has upper and lower reinforcement layers (Bo,Bu), each formed by at least one inner layer (Boy,Buy) and an outer layer (Box,Bux). A main section (12) is through the thickness of the concrete to pass at least over and under the innermost of at least one inner layer of the upper and lower reinforcement layers. The main section is a flat body, with fasteners (20) at the upper (14) and lower (15) ends to grip around at least a peripheral part of a reinforcement (S) at the upper and lower reinforcement layers.

Description

Die Erfindung betrifft ein Stahl- oder Spannbetonteil gemäß dem Oberbegriff von Anspruch 1. US 32386484 A offenbart solch Stahl- oder Spannbetonteil.The invention relates to a steel or prestressed concrete part according to the preamble of claim 1. US 32386484 A discloses such a steel or prestressed concrete part.

Bei querkraftbeanspruchten Stahl- oder Spannbetonteilen wie z. B. einer gestützten Stahlbetondecke ist u.a. im Bereich der Deckenstützen eine Schubbewehrung zur Schubsicherung notwendig.For transverse stress stressed steel or prestressed concrete parts such. B. a supported reinforced concrete ceiling is u.a. in the area of the floor supports a shear reinforcement for shear protection necessary.

Als Schubbewehrung sind u.a. bekannt: Schubbewehrungen aus Betonstahl mit Bewehrungselementen in Form von S-Haken (obwohl nach DIN 1045 nicht mehr zulässig) oder Bügeln, Dübelleisten, Doppelkopfdübel, Gitterträger, Tobler Walm, Geilinger Kragen, Bügelmatten, Riss Stern u.dgl.As shear reinforcement u.a. known: shear reinforcements made of reinforcing steel with reinforcing elements in the form of S-hooks (although no longer permitted according to DIN 1045) or ironing, dowel strips, double-headed dowels, lattice girders, Tobler Walm, Geilinger collar, ironing mats, crack star and the like.

Eine Schubbewehrung mit Bewehrungselementen in Form von S-Haken oder Bügeln muß aus Gründen der schlechten Verankerung eine meist vorhandene Biegelängsbewehrung umschließen, um ein Ausreißen der Schubbewehrung zu verhindern. Dabei ist festzustellen, daß eine nur mäßige Steigerung der Querkrafttragfähigkeit erreicht wird. Der Einbau der Bewehrungselemente ist aufwendig und damit kostenintensiv. Zudem gelten herkömmliche Bewehrungselemente, wie z.B. Bügel, bei hohen Bewehrungsgraden und hohem Schubbewehrungsanteil als nicht mehr einbaubar.A shear reinforcement with reinforcing elements in the form of S-hooks or straps must enclose a mostly existing Biegelängsbewehrung for reasons of poor anchoring to prevent tearing of the shear reinforcement. It should be noted that only a moderate increase in shear force capacity is achieved. The installation of the reinforcing elements is complicated and therefore expensive. In addition, conventional reinforcing elements, such as e.g. Temple, with high reinforcement levels and high shear reinforcement proportion as no longer installable.

Alternativ eingesetzte Dübelleisten werden meist auf die untere Schalung gestellt, so daß - wenn vorhanden - die untere Bewehrungslage vom Leistenquerschnitt umfasst wird. Für das Tragverhalten ist jedoch die genaue Lage und Fixierung der Leiste ausschlaggebend, was auf der Baustelle nicht immer zu gewährleisten ist. Die Dübelleisten sind überdies geschweißte Einzelanfertigungen, die im Verhältnis zu den sehr hohen Kosten eine kaum nachweisbare Steigerung der Querkrafttragfähigkeit bewirken.Alternatively inserted dowel strips are usually placed on the lower formwork, so that - if present - the lower reinforcement layer is covered by the strip cross-section. However, the exact position and fixation of the strip is decisive for the load-bearing behavior, which is not always guaranteed on the construction site. In addition, the dowel strips are welded individual productions which, in relation to the very high costs, produce a barely detectable increase in the lateral force carrying capacity.

Verbindungselemente oder Abstandhalter für die oberen und unteren Bewehrungslagen sind beispielsweise aus DE-U1-71 18 881 , DE-U1-298 14 923 , DE-OS-2 111 243 oder DE-OS-1 913 104 bekannt. Diese Elemente dienen jedoch nicht als Bewehrungselemente, sondern nur dazu, die in dem Betonteil vorgesehenen Bewehrungsstäbe vor dem Vergießen mit Beton in einer gewünschten Lage bzw. Position zu fixieren. Auf die Durchstanzfestigkeit oder gar auf die Querlasttragfähigkeit der Betondecke hat dies keinen Einfluß.For example, fasteners or spacers for the upper and lower reinforcement layers are off DE-U1-71 18 881 . DE-U1-298 14 923 . DE-OS 2,111,243 or DE-OS-1 913 104 known. However, these elements do not serve as reinforcing elements, but only to fix the provided in the concrete part reinforcing bars before pouring concrete in a desired position or position. On the puncture resistance or even on the load capacity of the concrete pavement this has no influence.

Andere bekannte Bewehrungselemente wie Doppelkopfdübel, Tobler Walm und Geilinger Kragen können zwar die Tragfähigkeit oder die Durchstanzfestigkeit eines Spann- oder Stahlbetonteils, insbesondere im Bereich einer Deckenstütze, verbessern. Die Querlasttragfähigkeit des Betonteils wird damit jedoch ebenfalls kaum beeinflußt. Überdies erweisen sich auch diese meist einzeln vor Ort anzufertigenden Elemente in der Herstellung als sehr teuer. Sie erfordern sowohl beim Einbau als auch bei der Herstellung einen hohen Zeiteinsatz, der auf der Baustelle oft nicht zur Verfügung steht.Although other known reinforcing elements such as double-headed dowels, Tobler Walm and Geilinger collar can improve the carrying capacity or puncture resistance of a prestressed or reinforced concrete part, especially in the area of a ceiling support. However, the transverse load capacity of the concrete part is thus also hardly affected. Moreover, these elements, which are usually to be produced individually on site, also prove to be very expensive to manufacture. They require a great deal of time both during installation and during production, which is often not available on the construction site.

Aufgabe der Erfindung ist es, diese und weitere Nachteile des Standes der Technik zu überwinden und Stahl- oder Spannbetonteile mit eingebauten Bewehrungselementen bereitzustellen, die einfach aufgebaut und kostengünstig herstellbar sind. Angestrebt wird ferner eine gute Verankerung der Bewehrungselemente zwischen den Bewehrungsstäben, wobei der Einbau schnell und unkompliziert durchführbar sein soll. Im fertigen Stahl oder Spannbetonbauteil sollen die Bewehrungselemente die Stabilität, insbesondere die Querlasttragfähigkeit des Bauteils merklich erhöhen. Das Stahl- oder Spannbetonteil soll ebenfalls kostengünstig herstellbar sowie einfach zu handhaben sein.The object of the invention is to overcome these and other disadvantages of the prior art and to provide steel or prestressed concrete parts with built-in reinforcing elements, which are simple in construction and inexpensive to produce. The aim is also a good anchoring of the reinforcing elements between the reinforcing bars, the installation should be carried out quickly and easily. In the finished steel or prestressed concrete component, the reinforcing elements should noticeably increase the stability, in particular the transversal load carrying capacity of the component. The steel or prestressed concrete part should also be inexpensive to produce and easy to handle.

Hauptmerkmale der Erfindung sind im kennzeichnenden Teil des Anspruchs 1 angegeben. Ausgestaltungen sind Gegenstand der Ansprüche 2 und 3.Main features of the invention are specified in the characterizing part of claim 1. Embodiments are the subject of claims 2 and 3.

Den Kern der Erfindung bildet ein Stahl- oder Spannbetonteil mit einem Bewehrungselement in Form eines flächigen Bauteils, welches die innerhalb des Betonteiles an den Oberflächen befindlichen oberen und unteren Bewehrungslagen, durch geeignete obere und untere Haltemittel kraftschlüssig miteinander verbindet. Dadurch wird die Querkrafttragfähigkeit des Stahl- oder Spannbetonteils deutlich erhöht.The core of the invention forms a steel or prestressed concrete part with a reinforcing element in the form of a flat component, which connects the upper and lower reinforcing layers located within the concrete part to the surfaces by means of suitable upper and lower holding means. As a result, the shear force capacity of the steel or prestressed concrete part is significantly increased.

Die Bewehrungselemente können als einfache freifallende Stanzteile gefertigt werden, die mit weiteren Abkantungen zu versehen sind. Dies ermöglicht eine äuβerst kostengünstige Fertigung, was sich auch günstig auf die Herstellkosten für die Betonteile auswirkt.The reinforcing elements can be manufactured as simple free-falling stamped parts, which are to be provided with further folds. This allows a very cost-effective production, which also has a favorable effect on the production costs for the concrete parts.

Die Bewehrungselemente sind einfach zu handhaben und rasch zu montieren. Sie müssen lediglich eingehängt werden. Besondere Fachkenntnisse oder Fertigkeiten, wie sie beispielsweise für Schweißarbeiten notwendig sind, sind nicht erforderlich.The reinforcement elements are easy to handle and quick to assemble. They just have to be hung. Special skills or skills, such as those required for welding, are not required.

Die Haltemittel weisen die Merkmale des kennzeichnenden Teiles des Anspruchs 1 aus.The holding means have the features of the characterizing part of claim 1.

Überraschenderweise wurde gefunden, dass Bewehrungselemente dieser Art, wenn sie erfindungsgemäß in Wechselwirkung mit den Bewehrungslagen innerhalb eines Betonteiles eingebaut sind, neben der Durchstanzfestigkeit vor allem die Querkrafttragfähigkeit gegenüber herkömmlichen Konstruktionen deutlich erhöhen.Surprisingly, it has been found that reinforcing elements of this type, if they are installed according to the invention in interaction with the reinforcement layers within a concrete part, in addition to the puncture resistance above all significantly increase the transverse force carrying capacity over conventional constructions.

Zu diesem überraschenden Ergebnis wurde auch gefunden, dass dazu eine minimale Dicke der flächigen Bauteile von z.B. 1 mm bei Verwendung von herkömmlichem Baustahl ausreicht, was sich äußerst günstig auf die Herstellkosten auswirkt.For this surprising result, it has also been found that a minimum thickness of the flat components of e.g. 1 mm is sufficient when using conventional structural steel, which has a very favorable effect on the production costs.

Weitere Merkmale, Einzelheiten und Vorteile der Erfindung ergeben sich aus dem Wortlaut der Ansprüche sowie aus der folgenden Beschreibung von Ausführungsbeispielen anhand der Zeichnungen. Es zeigen:

Fig. 1
eine schematische Seitenansicht eines Bewehrungselements,
Fig. 2
eine schematische Seitenansicht einer anderen Ausführungsform eines Bewehrungselements,
Fig. 3a
eine schematische Seitenansicht einer anderen Ausführungsform eines Bewehrungselements,
Fig. 3b
eine andere schematische Seitenansicht der Ausführungsform aus Fig. 2a ,
Fig. 4
eine schematische Darstellung einer weiteren Ausführungsform eines Bewehrungselements,
Further features, details and advantages of the invention will become apparent from the wording of the claims and from the following description of exemplary embodiments with reference to the drawings. Show it:
Fig. 1
a schematic side view of a reinforcing element,
Fig. 2
a schematic side view of another embodiment of a reinforcing element,
Fig. 3a
a schematic side view of another embodiment of a reinforcing element,
Fig. 3b
another schematic side view of the embodiment Fig. 2a,
Fig. 4
a schematic representation of another embodiment of a reinforcing element,

Die Bewehrungselemente in den Figuren 1 und 2 weisen nicht zwei Abkantungen auf. Bauteile mit diesen Bewehrungselementen sind somit nicht Teil der Erfindung.The reinforcing elements in the FIGS. 1 and 2 do not have two bends. Components with these reinforcing elements are therefore not part of the invention.

Das in Fig. 1 allgemein mit 10 bezeichnete Bewehrungselement ist für den Einsatz in einem (hier nicht näher dargestellten) Stahl- oder Spannbetonbauteil 1 vorgesehen. Es hat als Hauptteil 12 einen einfachen flachen Körper aus Baustahl, der in seinem oberen Bereich 14 und in seinem unteren Bereich 15 je eine Ausnehmung 30 aufweist. Letztere wird von einem Langloch gebildet, das zur seitlichen Längskante 16 des Flachkörpers 12 hin offen ist und sich etwa von dessen Längsmitte M aus senkrecht dazu erstreckt.This in Fig. 1 generally designated 10 reinforcing element is intended for use in a (not shown here) steel or prestressed concrete component 1. It has as the main part 12 a simple flat body made of structural steel, which has a recess 30 in its upper region 14 and in its lower region 15. The latter is formed by a slot which is open to the lateral longitudinal edge 16 of the flat body 12 and extends approximately from the longitudinal center of M perpendicular thereto.

Jede Ausnehmung 30 bildet ein Haltemittel 20 für ein (hier ebenfalls nicht gezeigtes) Bewehrungselement S, insbesondere für einen Bewehrungsstab einer oberen und unteren Bewehrungslage Bo, Bu in dem Stahl- oder Spannbetonteil 1 (siehe Fig. 26). Diese liegen jeweils an den (gleichfalls nicht näher bezeichneten) Bauteiloberflächen. Sie werden von wenigstens einer inneren Lage Bo_y, Bu_y und wenigstens einer senkrecht dazu verlaufenden äußeren Lage Bo_x, Bu_x gebildet.Each recess 30 forms a holding means 20 for a (also not shown here) reinforcing element S, in particular for a reinforcing bar an upper and lower reinforcing layer Bo, Bu in the steel or prestressed concrete part 1 (see Fig. 26). These lie in each case on the (also unspecified) component surfaces. They are formed by at least one inner layer Bo_y, Bu_y and at least one outer layer Bo_x, Bu_x running perpendicular thereto.

Bei der Montage wird der Flachkörper 12 mit seinen seitlich offenen Ausnehmungen 30 einfach auf zwei unmittelbar übereinander liegende, in gleicher Richtung verlaufende Bewehrungsstangen S der inneren Lagen Bo_y, Bu_y aufgesteckt, so dass jede Bewehrungsstange S zumindest teilweise umschlossen ist. Die lichte Höhe der Ausnehmungen 30 ist dabei so bemessen, dass der Flachkörper 12 mit Reibschluß fest auf den Bewehrungsstangen S aufsitzt und sich während dem Eingießen des Betons nicht lösen kann.During assembly, the flat body 12 with its laterally open recesses 30 is simply attached to two reinforcing rods S of the inner layers Bo_y, Bu_y which lie directly above one another and extend in the same direction, so that each reinforcing bar S is at least partially enclosed. The clear height of the recesses 30 is dimensioned so that the flat body 12 is firmly seated with friction on the reinforcing rods S and can not be solved during the pouring of the concrete.

Wichtig hierbei ist, dass jedes Bewehrungselement 10 mit seinem Flachkörper 12 stets quer, vorzugsweise senkrecht zu den Bewehrungsstangen S liegt und sich im wesentlichen über die Dicke des Stahl- oder Spannbetonteils 1 erstreckt, und zwar bis jeweils mindestens ober- und unterhalb der innersten der wenigstens einen inneren Lage Bo_y, Bu_y der oberen und unteren Bewehrungslage Bo, Bu. Letztere werden hierdurch kraftschlüssig miteinander verbunden.It is important that each reinforcing element 10 with its flat body 12 is always transversely, preferably perpendicular to the reinforcing bars S and extends substantially over the thickness of the steel or prestressed concrete part 1, to at least above and below the innermost of at least an inner layer Bo_y, Bu_y of the upper and lower reinforcement layer Bo, Bu. The latter are thereby positively connected with each other.

Vergleichsmessungen haben überraschenderweise gezeigt, dass die Bewehrungselemente 10 sowohl die Durchstanzfestigkeit als auch die Querkrafttragfähigkeit des erfindungsgemäßen Stahl- oder Spannbetonteils 1 gegenüber herkömmlichen Konstruktionen deutlich erhöhen. Hierbei reicht es völlig aus, wenn man den Flachkörper 12 aus herkömmlichen Baustahl mit einer Dicke von 1 mm fertigt. Dies wirkt sich günstig auf die Materialkosten aus.Comparative measurements have surprisingly shown that the reinforcing elements 10 significantly increase both the puncture resistance and the transverse force capacity of the steel or prestressed concrete part 1 according to the invention over conventional constructions. In this case, it is sufficient if one manufactures the flat body 12 of conventional structural steel with a thickness of 1 mm. This has a favorable effect on the material costs.

Ein weiterer Vorteil der Bewehrungselemente 10 besteht darin, dass diese dank ihrer einfachen Geometrie z.B. als freifallende Stanzteile gefertigt werden können, was die Herstellkosten weiter senkt. Sie lassen sich jederzeit schnell und unkompliziert einbauen, wobei keine besonderen Fachkenntnisse oder Fertigkeiten notwendig sind. Auch hierdurch werden die Herstellkosten für das zu fertigende Stahl- oder Spannbetonteil 1 deutlich reduziert.Another advantage of the reinforcing elements 10 is that they can be made, for example, as free-falling stampings thanks to their simple geometry, which further reduces the manufacturing costs. They can be installed quickly and easily at any time, with no special expertise or skills necessary. This also significantly reduces the production costs for the steel or prestressed concrete part 1 to be produced.

In dieser Ausführungsform nach Fig. 2 hat das Bewehrungselement 10 in seinem oberen Bereich 14 als Haltemittel 20 ein Langloch 30, während im unteren Bereich 15 eine runde oder ovale Ausnehmung 30 vorgesehen ist.In this embodiment according to Fig. 2 has the reinforcing element 10 in its upper portion 14 as a holding means 20, a slot 30, while in the lower region 15, a round or oval recess 30 is provided.

Eine weitere wichtige Ausführungsform des Bewehrungselements 10 ist in Fig. 2 dargestellt. Hier wird das Haltemittel 20 im oberen Bereich 14 des flächigen Körpers von einer endseitig angeformten einfachen Abkantung 40 gebildet. Diese umschließt vorzugsweise eine Bewehrungsstange S der äußeren Lage Bo_x der oberen Bewehrungslage Bo. Das Haltemittel 20 im unteren Bereich 15 des flächigen Körpers 12 ist eine L-förmige Ausnehmung 30, die eine Bewehrungsstange S der inneren Lage Bu_y der unteren Bewehrungslage Bu einschließt.Another important embodiment of the reinforcing element 10 is shown in FIG Fig. 2 shown. Here, the holding means 20 is formed in the upper region 14 of the sheet-like body by a simple folded edge 40 formed on the end side. This preferably encloses a reinforcing bar S of the outer layer Bo_x the upper reinforcement layer Bo. The holding means 20 in the lower region 15 of the planar body 12 is an L-shaped recess 30 which encloses a reinforcing bar S of the inner layer Bu_y of the lower reinforcing layer Bu.

Wie die Fig. 3a bis 3b zeigen, lassen sich die Haltemittel 20 in Form von Ausnehmungen 30 und Abkantungen 40 erfindungsgemäß miteinander kombinieren, wobei Bewehrungsstangen S der inneren bzw. äußeren Lagen Bo_y, Bu_y, Bo_x, Bu_x auch gleichzeitig erfaßt werden können.As the Fig. 3a to 3b show, the holding means 20 in the form of recesses 30 and folds 40 according to the invention combine with each other, wherein reinforcing rods S of the inner and outer layers Bo_y, Bu_y, Bo_x, Bu_x can also be detected simultaneously.

In Fig. 3a ist die im oberen Bereich 14 angeformte Abkantung 40 nach hinten abgewinkelt, während die Abkantung 40 im unteren Bereich 15 nach vorne weist. Das Bewehrungselement 10 hat mithin - wie in Fig. 3b zu erkennen - im Querschnitt eine im wesentlichen Z-förmige Gestalt.In Fig. 3a is the integrally formed in the upper region 14 fold 40 angled backwards, while the fold 40 in the lower region 15 points forward. The reinforcing element 10 thus has - as in Fig. 3b to recognize - in cross section a substantially Z-shaped shape.

Die Ausführungsform von Fig. 4 zeigt, dass im oberen und unteren Bereich 14, 15 des Flachkörpers 12 symmetrisch zu dessen Längsmitte M insgesamt vier Ausnehmungen 30 als Haltemittel 20 vorgesehen sind, welche die Bewehrungsstangen S formschlüssig umschließen. Die Ausnehmungen 30 sind zu den Längskanten 16 nicht offen ausgebildet, d.h. die Bewehrungsstangen S werden im Wesentlichen senkrecht in den Flachkörper 12 eingeführt. Zusätzliche Abkantungen 40 umschließen als zusätzliche Haltemittel 20 die jeweils äußere Lage Bo_x, Bu_x der oberen und unteren Bewehrungslage Bo, Bu, so dass die Bewehrungselemente 10 zur Steigerung der Querlasttragfähigkeit optimal in das Stahl- oder Spannbetonteil 1 eingebunden sind. Darüber hinaus erhöht sich dessen Duktilität bei Querkraftbeanspruchung.The embodiment of Fig. 4 shows that in the upper and lower regions 14, 15 of the flat body 12 symmetrically to the longitudinal center M four recesses 30 are provided as a holding means 20, which enclose the reinforcing rods S form fit. The recesses 30 are not open to the longitudinal edges 16, that is, the reinforcing rods S are inserted substantially perpendicularly into the flat body 12. Additional folds 40 surround as additional retaining means 20, the respective outer layer Bo_x, Bu_x the upper and lower reinforcement layer Bo, Bu, so that the reinforcing elements 10 are optimally integrated into the steel or prestressed concrete part 1 to increase the shear capacity. In addition, its ductility increases with transverse force stress.

Bei Bedarf können die Bewehrungselemente 10 auch mehr als vier Bewehrungsstangen S umschließen. Der flächige Körper 12 ist hierzu quer zu seiner Längmitte M entsprechend zu verlängern und mit der erforderlichen Anzahl an Haltemitteln 20 zu versehen.If required, the reinforcing elements 10 can also enclose more than four reinforcing rods S. For this purpose, the planar body 12 is to be lengthened transversely to its longitudinal center M and provided with the required number of holding means 20.

Je nach Betonart und gewünschter Belastbarkeit sind die Bauteile 10 in der Anzahl und Ausführungsform zu bemessen, um die erforderliche Durchstanzfestigkeit z.B. im Bereich einer Säule zu erreichen. In jedem Fall ergibt sich für das Bauteil 1 eine deutlich gesteigerte Querkrafttragfähigkeit.Depending on the type of concrete and the desired load capacity, the number and size of the components 10 are to be dimensioned in order to achieve the required puncture resistance, e.g. in the area of a column. In any case, results for the component 1 a significantly increased lateral force capacity.

Die Erfindung ist nicht auf eine der vorbeschriebenen Ausführungsformen beschränkt, sondern in vielfältiger Weise abwandelbar. So können die Bewehrungselemente 10 beispielsweise auch aus anderen Materialien wie z.B. Stahlblech, Kunststoff, oder Verbundwerkstoff gefertigt werden. Auch kann man die Bewehrungselemente 10. bzw. deren Flachkörper 12 quer zur Längsmitte M verlängert ausbilden, um auf diese Weise mehrere Bewehrungsstangen S der oberen und unteren Bewehrungslagen Bo, Bu gleichzeitig zu umschließen. Wichtig ist auch hier, dass es sich bei den Bewehrungselementen 10 stets um einfache flache, gegebenenfalls endseitig oder mittig gekantete Blechteile handelt, die im oberen und unteren Bereich Haltemittel zur Aufnahme bzw. zum Umschließen der Bewehrungsstangen S einer oberen und unteren Bewehrungslage Bo, Bu aufweisen. Der Einbau erfolgt ohne aufwendige Schweiß- oder Montagearbeiten, wobei die oberen und unteren Bewehrungslagen Bo, Bu von den Bewehrungselementen 10 in Zugrichtung kraftschlüssig miteinander verbunden sind.The invention is not limited to one of the above-described embodiments, but can be modified in many ways. For example, the reinforcing elements 10 can also be made of other materials, e.g. Sheet steel, plastic, or composite material are manufactured. Also, you can form the reinforcing elements 10 and their flat body 12 extends transversely to the longitudinal center M extended to surround in this way a plurality of reinforcing bars S of the upper and lower reinforcing layers Bo, Bu simultaneously. It is also important here that the reinforcing elements 10 are always flat, possibly folded at the ends or in the middle, sheet metal parts which have holding means for receiving or enclosing the reinforcing rods S of an upper and lower reinforcement layer Bo, Bu in the upper and lower regions , The installation is carried out without complex welding or assembly work, the upper and lower reinforcing layers Bo, Bu are connected by the reinforcing elements 10 in the pulling direction non-positively.

Sämtliche aus den Ansprüchen, der Beschreibung und den Zeichnungen hervorgehenden Merkmale und Vorteile, einschließlich konstruktiver Einzelheiten, räumlicher Anordnungen und Verfahrensschritten, können sowohl für sich als auch in den verschiedensten Kombinationen erfindungswesentlich sein.All of the claims, the description and the drawings resulting features and advantages, including design details, spatial arrangements and method steps may be essential to the invention both in itself and in a variety of combinations.

BezugszeichenlisteLIST OF REFERENCE NUMBERS

Bo, BuBo, Bu
Bewehrungslagereinforcement layer
Bo_y, Bu_yBo_y, Bu_y
innere Lageinner situation
Bo_x, Bu_xBo_x, Bu_x
äußere Lageouter location
MM
Längsmittelongitudinal center
SS
Bewehrungselementreinforcing element
11
Stahl- oder SpannbetonbauteilSteel or prestressed concrete component
1010
Bewehrungselementreinforcing element
1212
HauptteilBulk
1414
oberer Bereichupper area
1515
unterer Bereichlower area
1616
Längskantelongitudinal edge
2020
Haltemittelholding means
3030
Ausnehmungrecess
3232
Erweiterungextension
4040
Abkantungfold

Claims (3)

  1. Reinforced or prestressed concrete component (1) in which at least one reinforcing layer (Bo, Bu) is provided on the surfaces of the component at both the top and bottom as a bending reinforcement which consists of a plurality of reinforcing bars (S) in the x direction (Bo_x, Bu_x) and in the y direction (Bo_y, Bu_y and Bo_x, Bu_x), in order to increase the load-bearing capacity for transverse force, at least one reinforcing element (10) being provided comprising a main part (12) which extends substantially over the thickness of the reinforced or prestressed concrete part (1) and in each case as far as at least above and below the innermost of the at least one inner layer (Bo_y, Bu_y) of the upper and lower reinforcing layer (Bo, Bu), the main part (12) being a planar member comprising at least one retaining means (20) in both its upper region (14) and in its lower region (15), which means is shaped to surround at least part of the circumference of a reinforcing bar (S) of the upper and lower reinforcing layer (Bo, Bu) and thus serves to provide a friction-locking connection between at least one reinforcing bar (S) of the upper and lower reinforcing layers, characterised in that the planar component (10) comprises a simple chamfer (40) on one side as a retaining means (20), and the planar component (10) comprises, on the opposite side, a plurality of retaining means (20) for surrounding reinforcing bars (S) of the upper or lower reinforcing layer (Bo, Bu) at the upper or lower end of the component (10), namely a simple chamfer (40) and at least two recesses (30) which are located symmetrically with respect to a central longitudinal axis (M) of the planar member (12).
  2. Reinforced or prestressed concrete component (1) according to claim 1, characterised in that the planar member (12) is made from constructional steel.
  3. Reinforced or prestressed concrete component (1) according to claim 1 or 2, characterised in that the planar member (12) has a thickness of at least 1 mm.
EP09005165.7A 2003-03-10 2004-03-09 Reinforcement elements and steel or reinforced concrete sections produced with same Expired - Lifetime EP2075388B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10310715A DE10310715A1 (en) 2003-03-10 2003-03-10 Invention relating to components as reinforcement elements and concrete parts made therefrom
EP04718614A EP1601842B1 (en) 2003-03-10 2004-03-09 Reinforcing elements and reinforced concrete or prestressed concrete parts produced by means of the same

Related Parent Applications (2)

Application Number Title Priority Date Filing Date
EP04718614.3 Division 2004-03-09
EP04718614A Division EP1601842B1 (en) 2003-03-10 2004-03-09 Reinforcing elements and reinforced concrete or prestressed concrete parts produced by means of the same

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EP2075388A1 EP2075388A1 (en) 2009-07-01
EP2075388B1 true EP2075388B1 (en) 2013-09-11

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EP09005165.7A Expired - Lifetime EP2075388B1 (en) 2003-03-10 2004-03-09 Reinforcement elements and steel or reinforced concrete sections produced with same
EP04718614A Expired - Lifetime EP1601842B1 (en) 2003-03-10 2004-03-09 Reinforcing elements and reinforced concrete or prestressed concrete parts produced by means of the same

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US (1) US20070101672A1 (en)
EP (2) EP2075388B1 (en)
JP (1) JP2006519944A (en)
AT (1) ATE483077T1 (en)
CA (1) CA2541978C (en)
DE (2) DE10310715A1 (en)
WO (1) WO2004081313A1 (en)

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Publication number Publication date
EP2075388A1 (en) 2009-07-01
DE10310715A1 (en) 2004-10-07
CA2541978C (en) 2008-05-13
CA2541978A1 (en) 2004-09-23
EP1601842B1 (en) 2010-09-29
ATE483077T1 (en) 2010-10-15
WO2004081313A1 (en) 2004-09-23
DE502004011697D1 (en) 2010-11-11
US20070101672A1 (en) 2007-05-10
JP2006519944A (en) 2006-08-31
EP1601842A1 (en) 2005-12-07

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